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<p>&#x4E00;&#x79CD;&#x662F;&#x4FEE;&#x6539;<code>innerHTML</code>&#x5C5E;&#x6027;&#xFF0C;&#x8FD9;&#x4E2A;&#x65B9;&#x5F0F;&#x975E;&#x5E38;&#x5F3A;&#x5927;&#xFF0C;&#x4E0D;&#x4F46;&#x53EF;&#x4EE5;&#x4FEE;&#x6539;&#x4E00;&#x4E2A;DOM&#x8282;&#x70B9;&#x7684;&#x6587;&#x672C;&#x5185;&#x5BB9;&#xFF0C;&#x8FD8;&#x53EF;&#x4EE5;&#x76F4;&#x63A5;&#x901A;&#x8FC7;HTML&#x7247;&#x6BB5;&#x4FEE;&#x6539;DOM&#x8282;&#x70B9;&#x5185;&#x90E8;&#x7684;&#x5B50;&#x6811;&#xFF1A;</p>
<pre><code class="lang-javascript"><span class="hljs-comment">// &#x83B7;&#x53D6;&lt;p id=&quot;p-id&quot;&gt;...&lt;/p&gt;</span>
<span class="hljs-keyword">var</span> p = <span class="hljs-built_in">document</span>.getElementById(<span class="hljs-string">&apos;p-id&apos;</span>);
<span class="hljs-comment">// &#x8BBE;&#x7F6E;&#x6587;&#x672C;&#x4E3A;abc:</span>
p.innerHTML = <span class="hljs-string">&apos;ABC&apos;</span>; <span class="hljs-comment">// &lt;p id=&quot;p-id&quot;&gt;ABC&lt;/p&gt;</span>
<span class="hljs-comment">// &#x8BBE;&#x7F6E;HTML:</span>
p.innerHTML = <span class="hljs-string">&apos;ABC &lt;span style=&quot;color:red&quot;&gt;RED&lt;/span&gt; XYZ&apos;</span>;
<span class="hljs-comment">// &lt;p&gt;...&lt;/p&gt;&#x7684;&#x5185;&#x90E8;&#x7ED3;&#x6784;&#x5DF2;&#x4FEE;&#x6539;</span>
</code></pre>
<p>&#x7528;<code>innerHTML</code>&#x65F6;&#x8981;&#x6CE8;&#x610F;&#xFF0C;&#x662F;&#x5426;&#x9700;&#x8981;&#x5199;&#x5165;HTML&#x3002;&#x5982;&#x679C;&#x5199;&#x5165;&#x7684;&#x5B57;&#x7B26;&#x4E32;&#x662F;&#x901A;&#x8FC7;&#x7F51;&#x7EDC;&#x62FF;&#x5230;&#x4E86;&#xFF0C;&#x8981;&#x6CE8;&#x610F;&#x5BF9;&#x5B57;&#x7B26;&#x7F16;&#x7801;&#x6765;&#x907F;&#x514D;XSS&#x653B;&#x51FB;&#x3002;</p>
<p>&#x7B2C;&#x4E8C;&#x79CD;&#x662F;&#x4FEE;&#x6539;<code>innerText</code>&#x6216;<code>textContent</code>&#x5C5E;&#x6027;&#xFF0C;&#x8FD9;&#x6837;&#x53EF;&#x4EE5;&#x81EA;&#x52A8;&#x5BF9;&#x5B57;&#x7B26;&#x4E32;&#x8FDB;&#x884C;HTML&#x7F16;&#x7801;&#xFF0C;&#x4FDD;&#x8BC1;&#x65E0;&#x6CD5;&#x8BBE;&#x7F6E;&#x4EFB;&#x4F55;HTML&#x6807;&#x7B7E;&#xFF1A;</p>
<pre><code class="lang-javascript"><span class="hljs-comment">// &#x83B7;&#x53D6;&lt;p id=&quot;p-id&quot;&gt;...&lt;/p&gt;</span>
<span class="hljs-keyword">var</span> p = <span class="hljs-built_in">document</span>.getElementById(<span class="hljs-string">&apos;p-id&apos;</span>);
<span class="hljs-comment">// &#x8BBE;&#x7F6E;&#x6587;&#x672C;:</span>
p.innerText = <span class="hljs-string">&apos;&lt;script&gt;alert(&quot;Hi&quot;)&lt;/script&gt;&apos;</span>;
<span class="hljs-comment">// HTML&#x88AB;&#x81EA;&#x52A8;&#x7F16;&#x7801;&#xFF0C;&#x65E0;&#x6CD5;&#x8BBE;&#x7F6E;&#x4E00;&#x4E2A;&lt;script&gt;&#x8282;&#x70B9;:</span>
<span class="hljs-comment">// &lt;p id=&quot;p-id&quot;&gt;&amp;lt;script&amp;gt;alert(&quot;Hi&quot;)&amp;lt;/script&amp;gt;&lt;/p&gt;</span>
</code></pre>
<p>&#x4E24;&#x8005;&#x7684;&#x533A;&#x522B;&#x5728;&#x4E8E;&#x8BFB;&#x53D6;&#x5C5E;&#x6027;&#x65F6;&#xFF0C;<code>innerText</code>&#x4E0D;&#x8FD4;&#x56DE;&#x9690;&#x85CF;&#x5143;&#x7D20;&#x7684;&#x6587;&#x672C;&#xFF0C;&#x800C;<code>textContent</code>&#x8FD4;&#x56DE;&#x6240;&#x6709;&#x6587;&#x672C;&#x3002;&#x53E6;&#x5916;&#x6CE8;&#x610F;IE&lt;9&#x4E0D;&#x652F;&#x6301;<code>textContent</code>&#x3002;</p>
<h3 id="&#x4FEE;&#x6539;css">&#x4FEE;&#x6539;css</h3>
<p>&#x4FEE;&#x6539;CSS&#x4E5F;&#x662F;&#x7ECF;&#x5E38;&#x9700;&#x8981;&#x7684;&#x64CD;&#x4F5C;&#x3002;DOM&#x8282;&#x70B9;&#x7684;<code>style</code>&#x5C5E;&#x6027;&#x5BF9;&#x5E94;&#x6240;&#x6709;&#x7684;CSS&#xFF0C;&#x53EF;&#x4EE5;&#x76F4;&#x63A5;&#x83B7;&#x53D6;&#x6216;&#x8BBE;&#x7F6E;&#x3002;&#x56E0;&#x4E3A;CSS&#x5141;&#x8BB8;<code>font-size</code>&#x8FD9;&#x6837;&#x7684;&#x540D;&#x79F0;&#xFF0C;&#x4F46;&#x5B83;&#x5E76;&#x975E;JavaScript&#x6709;&#x6548;&#x7684;&#x5C5E;&#x6027;&#x540D;&#xFF0C;&#x6240;&#x4EE5;&#x9700;&#x8981;&#x5728;JavaScript&#x4E2D;&#x6539;&#x5199;&#x4E3A;&#x9A7C;&#x5CF0;&#x5F0F;&#x547D;&#x540D;<code>fontSize</code>&#xFF1A;</p>
<pre><code class="lang-javascript"><span class="hljs-comment">// &#x83B7;&#x53D6;&lt;p id=&quot;p-id&quot;&gt;...&lt;/p&gt;</span>
<span class="hljs-keyword">var</span> p = <span class="hljs-built_in">document</span>.getElementById(<span class="hljs-string">&apos;p-id&apos;</span>);
<span class="hljs-comment">// &#x8BBE;&#x7F6E;CSS:</span>
p.style.color = <span class="hljs-string">&apos;#ff0000&apos;</span>;
p.style.fontSize = <span class="hljs-string">&apos;20px&apos;</span>;
p.style.paddingTop = <span class="hljs-string">&apos;2em&apos;</span>;
</code></pre>
<h3 id="&#x4FEE;&#x6539;&#x5143;&#x7D20;&#x5C5E;&#x6027;">&#x4FEE;&#x6539;&#x5143;&#x7D20;&#x5C5E;&#x6027;</h3>
<pre><code class="lang-js"><span class="hljs-comment">// &#x83B7;&#x53D6;&lt;p id=&quot;p-id&quot; min=&apos;2&apos; &gt;...&lt;/p&gt;</span>
<span class="hljs-keyword">var</span> p = <span class="hljs-built_in">document</span>.getElementById(<span class="hljs-string">&apos;p-id&apos;</span>);
<span class="hljs-comment">// &#x83B7;&#x53D6;&#x5143;&#x7D20;&#x4EFB;&#x4E00;&#x5C5E;&#x6027;</span>
<span class="hljs-keyword">var</span> min = p.getAttribute(<span class="hljs-string">&quot;min&quot;</span>);
<span class="hljs-comment">// &#x4FEE;&#x6539;&#x8BBE;&#x7F6E;</span>
p.setAttribute(<span class="hljs-string">&quot;min&quot;</span>, <span class="hljs-string">&quot;3&quot;</span>);
</code></pre>

                                
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